Transaction not yet indexed

mUMmk2Tsjk6K8NGv21FJ3Xijt2PhSHd2cLLewV2axBbtR32XtSkZv1ka9a8ikF3sdgMJGn3ctMCrC9WBMAY4EYb

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.